Set up a wet floor sign after you’ve mopped or cleaned up a spill to make your employees and visitors aware that floors may be slippery and hazardous. These signs have simple designs, but they are great at catching the attention of your guests. Choose a fluorescent yellow style that is easy to see, even in dimly lit areas, or go with a decorative wet floor caution sign to use in elegant restaurants, hotel lobbies, and other upscale settings